Odd behaviour with UDPMon at 100 mbit rates on Boston machines

Equipment

These tests were conducted on a the Boston Supermicro Dual Xeon machines with .....,.....

The tests were conducted on a back to back configuration with the build in 100 mbit/sec NICs. Driver's show that they are e100 (intel) compatible.

Proceedure

A script was used to iterate through all values of packet size and interval to create 2d tables of each udpmon variable. The scripts are:

do_packetsize.pl - a perl script to run udpmon with various packet sizes and present table
udpmon-cook.pl - perl script to tabulate udpmon data
do_packetsize-vs-interval.pl - wrapper script to run and create a 2d table of all udpmon variables - was adjusted to truncate long file names so that summary files can be created.

The test was left to run on the machines using very fine grained increments in each parameter and the values plotted below.

Results

Excel file here.

Wed, 23 July, 2003 13:07